[PyOpenGL-Users] glGetTexImage weirdness

[Gijs <in...@bs...>]

Hello List,

I'm trying to find why glGetTexImage works the way it does. With the 
following piece of code, I expect both prints to be the same.

pixels = zeros(1*4, 'i') + 97
img = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, int(img))
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, 
GL_UNSIGNED_BYTE, pixels)

data = glGetTexImageub(GL_TEXTURE_2D, 0, GL_RGBA)
print data
data = glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE)
print data

As I expect that PyOpenGL would pass GL_UNSIGNED_BYTE to the underlying 
function when I use glGetTexImageub, and that if I pass the type myself 
directly, the result would be the same. But in the first case I get a 
proper response, containing [[[97 97 97 97]]], and the second I get a 
rather weird response "aaaa" (a string). In the end it's of course quite 
easy to work around it, since you can just use the glGetTexImageub 
function, but when I stumbled upon it, it took me quite some time to 
find it since I assumed both would be the same.

Regards,

Gijs